Carter Carburetor Weekly Air Monitoring & Sampling Report August 31, 2015 - September 06, 2015 Carter Carburetor Daily Weather Conditions Monday 8/31/2015 Tuesday 9/01/2015 Wednesday 9/02/2015 Thursday 9/03/2015 Friday 9/04/2015 Saturday 9/05/2015 Sunday 9/06/2015 Temperature (range)1 94-73 96-74 97-74 98-75 98-76 97-75 98-76 Wind Speed (peak & average)2 20.1/2.6 11.2/3.0 13.4/2.7 13.4/2.5 8.9/2.3 8.9/2.0 13.4/2.8 Wind Direction (predominant) SW SW SW SW SW SW SW Precipitation (total)3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Carter Carburetor Daily Work Activities Site Activity Monday 8/31/2015 Tuesday 9/01/2015 Wednesday 9/02/2015 Thursday 9/03/2015 Friday 9/04/2015 Saturday 9/05/2015 Sunday 9/06/2015 Preparation for excavation X X X X X Demolition of Wilco building X X X X X Floor removal in CBI building X X X X X Daily Air Monitoring and Sampling Results Air Monitoring/ Sampling Results - Station 1 LINC127 (Results reported in |ig/mB) Parameter Type of Analysis Standard / Action Level Monday 8/31/2015 Tuesday 9/01/2015 Wednesday 9/02/2015 Thursday 9/03/2015 Friday 9/04/2015 Saturday 9/05/2015 Sunday 9/06/2015 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 32.8 33.1 32.7 31.6 34.7 37.5 44.4 Aroclor -1242 (in air sample) Lab 30.7 ng/m3 (epa Region 7) ND ND Aroclor -1248 (in air sample) Lab 30.7 ng/m3 (epa Region 7) ND ND Aroclor -1254 (in air sample) Lab 30.7 ng/m3 (epa Region 7) ND ND Aroclor -1260 (in air sample) Lab 30.7 ng/m3 (epa Region 7) ND ND Comments Laboratory samples collected Monday, 8/31/2015, and Wednesday, 9/02/2015. lllllllllllllllllllllllllllllllllllllllllllllll 30285581 ------- Carter Carburetor Weekly Air Monitoring & Sampling Report August 31, 2015 - September 06, 2015 Air Monitoring / Sampling Results - Station 2 LINC126 (Results reported in |ig/mB) Parameter Type of Analysis Standard / Action Level Monday 8/31/2015 Tuesday 9/01/2015 Wednesday 9/02/2015 Thursday 9/03/2015 Friday 9/04/2015 Saturday 9/05/2015 Sunday 9/06/2015 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 24.6 22.1 24.8 25.6 26.9 27.3 32.3 Aroclor -1242 (in air sample) Lab 30.7 ng/m3 (epa Region 7) ND ND Aroclor -1248 (in air sample) Lab 30.7 ng/m3 (epa Region 7) ND 0.00597 Aroclor -1254 (in air sample) Lab 30.7 ng/m3 (epa Region 7) ND ND Aroclor -1260 (in air sample) Lab 30.7 ng/m3 (epa Region 7) ND ND Comments Laboratory samples collected Monday, 8/31/2015, and Wednesday, 9/02/2015. Air Monitoring / Sampling Results - Station 3 LINC 123 (Results reported in |ig/mB) Parameter Type of Analysis Standard / Action Level Monday 8/31/2015 Tuesday 9/01/2015 Wednesday 9/02/2015 Thursday 9/03/2015 Friday 9/04/2015 Saturday 9/05/2015 Sunday 9/06/2015 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 30.8 29.7 29.4 28.3 31.4 35.6 41.6 Aroclor -1242 (in air sample) Lab 30.7 ng/m3 (epa Region 7) ND ND Aroclor -1248 (in air sample) Lab 30.7 ng/m3 (epa Region 7) 0.0319 0.0212 Aroclor -1254 (in air sample) Lab 30.7 ng/m3 (epa Region 7) ND ND Aroclor -1260 (in air sample) Lab 30.7 ng/m3 (epa Region 7) ND ND Comments Laboratory samples collected Monday, 8/31/2015, and Wednesday, 9/02/2015. ------- Carter Carburetor Weekly Air Monitoring & Sampling Report August 31, 2015 - September 06, 2015 Air Monitoring / Sampling Results - Station 4 LINC128 (Results reported in |ig/mB) Parameter Type of Analysis Standard / Action Level Monday 8/31/2015 Tuesday 9/01/2015 Wednesday 9/02/2015 Thursday 9/03/2015 Friday 9/04/2015 Saturday 9/05/2015 Sunday 9/06/2015 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 21.9 20.3 20.1 18.7 20.8 24.7 29.6 Aroclor -1242 (in air sample) Lab 30.7 ng/m3 (epa Region 7) ND ND Aroclor -1248 (in air sample) Lab 30.7 ng/m3 (epa Region 7) ND ND Aroclor -1254 (in air sample) Lab 30.7 ng/m3 (epa Region 7) ND ND Aroclor -1260 (in air sample) Lab 30.7 ng/m3 (epa Region 7) ND ND Comments Laboratory samples collected Monday, 8/31/2015, and Wednesday, 9/02/2015. Air Monitoring / Sampling Results - Station 5 LINC 133 (Results reported in |ig/mB) Parameter Type of Analysis Standard / Action Level Monday 8/31/2015 Tuesday 9/01/2015 Wednesday 9/02/2015 Thursday 9/03/2015 Friday 9/04/2015 Saturday 9/05/2015 Sunday 9/06/2015 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 37.3 35.5 36.3 36.4 40.2 42.4 51.5 Aroclor -1242 (in air sample) Lab 30.7 ng/m3 (epa Region 7) ND ND Aroclor -1248 (in air sample) Lab 30.7 ng/m3 (epa Region 7) 0.00992 0.0168 Aroclor -1254 (in air sample) Lab 30.7 ng/m3 (epa Region 7) ND ND Aroclor -1260 (in air sample) Lab 30.7 ng/m3 (epa Region 7) ND ND Comments Laboratory samples collected Monday, 8/31/2015, and Wednesday, 9/02/2015. Legend: No shading - indicates TWA readings less than the applicable standard/action level Yellow shading - indicates a 1-hour TWA exceeded the applicable standard/action level, but the 24-hour TWA was below the standard/action level; initiate investigation Red shading - indicates the 24-hour TWA exceeded the applicable standard/action level; initiate corrective action Blue shading - indicates no data are available Aroclor - Monsanto mixture of polychlorinated biphenyl (PCB) congeners NAAQS - National Ambient Air Quality Standard ND - Not detected PCB-Polychlorinated biphenyl PMio - Particulate matter less than 10 microns in size TWA - Time-weighted average (average of data collected from 12:00 AM to 12:00 AM) iag/m3 - Micrograms per cubic meter temperature reported in degrees Fahrenheit 2Wind speed reported in miles per hour 3 Precipitation reported in inches ------- Carter Carburetor Weekly Air Monitoring & Sampling Report August 31, 2015 - September 06, 2015 St. Louis City ir Station 5 Air Station 2 Weather Station m Hi Air Station 1 Legend ® Air station location Weatherstation ^ location Missouri Station Site Locator Station o Site Boundary| ------- |